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Contract OI history

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Nov 20, 2026 EXPIRATION

MSFT $430.00 Put

MSFT261120P00430000

Latest saved OI3,372Oct 23, 2026
Last change+18vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
MSFT $430.00 put open interest history 7 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 3,8401,9200 2026-10-09: 2,810 OI2026-10-13: 3,286 OI2026-10-14: 3,286 OI2026-10-15: 3,829 OI2026-10-16: 3,840 OI2026-10-21: 3,354 OI2026-10-23: 3,372 OI Oct 09, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

MSFT contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 2026Viewing3,372+18
Oct 21, 20263,354-486
Oct 16, 20263,840+11
Oct 15, 20263,829+543
Oct 14, 20263,2860
Oct 13, 20263,286+476
Oct 09, 20262,810No prior observation